Table 1 Age, sex, BMI and smoking status of the asthmatics and the controls
Variables | No | Current asthma No (%) | No | Controls No (%) | P values |
|---|---|---|---|---|---|
Number of subjects | 744 | 847 | |||
Sex (women) | 460 (61.8) | 451 (53.2) | 0.001 | ||
Age | 47.6 ± 15.5 | 49.9 ± 15.5 | 0.002 | ||
BMI | 743 | 847 | |||
<20 | 23 (3.1) | 38 (4.5) | 0.150 | ||
20-25 | 242 (32.6) | 337 (39.8) | 0.003 | ||
25-30 | 289 (38.9) | 364 (43.0) | 0.099 | ||
≥30 | 189 (25.4) | 108 (12.8) | <0.001 | ||
Smoking status | 742 | 844 | |||
Non-smokers | 386 (52) | 457 (54.1) | 0.206* | ||
Ex-smokers | 261 (35.2) | 298 (35.3) | |||
Smokers | 95 (12.8) | 89 (10.5) |